3M uses cookies on this site Detailed information on cookies and their use can be found in our Privacy Policy. You can customize the cookie-related settings at any time by clicking on Cookie Preferences in the footer of this page.

By clicking "Accept and Proceed" you acknowledge that you agree to the use of cookies on your computer

Accept and Proceed

Skip to Primary Navigation Skip to Site Navigation Skip to Main Content All 3M.com Site Map

Chapter 8 Explained

Chapter 8 part 2 section O5.2.3 requires that on high-speed roads (50 mph+), all vehicles stopping on the highway for purposes of works or inspections shall be equipped with high visibility rear markings. It also requires or allows for other markings too, for example, to the sides of long vehicles that are used in temporary traffic management situations.

About Chapter 8

  • Chapter 8 part 2 section O5 is all about protecting workers and vehicles that have to work on high speed roads, although it recommends the same specifications be used for works vehicles on all types of highway irrespective of speed limit.
  • It requires on high-speed roads, that all vehicles stopping on the highway for works purposes or inspections shall be equipped with high visibility rear markings.
  • Permitted markings include chevrons comprising alternate strips of fluorescent orange-red retroreflective material and fluorescent yellow non-retroreflective material.
  • Each strip of the chevron must be not less than 150 mm in width, inclined at 45-60° to the horizontal and pointing upwards.
  • An alternative to chevrons is a solid block of fluorescent orange-red retroreflective material.
  • Red retroreflective tape must also be applied to all rear facing edges of open doors, guardrails and equipment lockers, and to the face of any device that obscures the markings and is displayed to the rear and other road users.
  • The reflective markings must be 'Class RA2' or 'microprismatic' (e.g. 3M™ Diamond Grade™ DG³ reflective sheeting) in the case of rear markings and 'high visibility fluorescent or non fluorescent yellow reflective' in the case of side markings.

Why Mark?

  • Conspicuity markings can reduce accidents, can save lives and improve the visibility of the vehicle
  • Fewer accidents mean less downtime, less contracts missed and savings on repair costs
  • Protect your company against potential legal action related to third party safety
  • Reassures and motivates the workforce to know that your business takes their safety seriously
  • To meet the highly recommended best practice guidance of TSM Chapter 8

Technical Downloads

Download our free comprehensive guide to Chapter 8:

Chapter 8 (Section O5) Guidance (PDF 104KB)

For a summary of features and benefits of our products, download our brochure:

Vehicle Conspicuity Brochure (PDF 422KB)

Frequently Asked Questions

What level of reflectivity is required for the red portion of the chevron - “high visibility rear markings”?

Chapter 8 makes specific reference to the use of 'Class RA2' and 'microprismatic' reflective markings' on the rear of vehicles stopping on high speed roads in paragraph O5.5.2 and O5.5.3 The fluorescent yellow portion of the chevrons needs to be non-reflective. Vehicle conspicuity is dealt with in Section O5.2 of Chapter 8, with the specification for high visibility rear markings included in paragraph O5.2.3.

Does the yellow portion of the chevron have to be fluorescent?

Yes as stated in paragraph O5.2.3 of Chapter 8

What is a “high speed road”?

50mph road, permanent speed and can be single lane.

What is the legal remit of chapter 8?

Chapter 8 is not a code of practice but the principles are the same. It is guidance based on best practice. Organisations need to show that they have considered Chapter 8 if they choose not to comply and have a good reason why they have chosen not to comply. A justification of non compliance needs to be documented. There needs to be a common sense approach to Chapter 8 from organisations.

Which parts of the UK are covered by Chapter 8?

The conspicuity section of Chapter 8 is consistent for the UK and Northern Ireland.

Is there an overlap between regulation ECE104 and Chapter 8 chevrons?

You would need both to apply both chapter 8 and ECE104 markings if the vehicle is over 7.5 tonnes or trailer over 3.5 tonnes and are expected to stop on a high speed road. Chapter 8 states: “O5.2.7 Motor vehicles with a maximum gross weight exceeding 7.5 tonnes and trailers with a maximum gross weight exceeding 3.5 tonnes must be fitted with rear markings in accordance with the Lighting Regulations.

Ready to Buy?

All of our partners match our desire to provide the very best products and customer service.

Guide to Regulations & Specifications

Let us help  you understand how current regulations impact you with our simple guides.

Ask a 3M Expert

For up to the minute advice about products, current regulations and more, contact our team of experts.

Register Now For a 3M Seminar

Find out when and where our next Seminar will be.